subtractor_output.h

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/*

 *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_

#define MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_

#include <array>

#include "api/array_view.h"

#include "modules/audio_processing/aec3/aec3_common.h"

#include "modules/audio_processing/aec3/fft_data.h"

namespace webrtc {

// Stores the values being returned from the echo subtractor for a single

// capture channel.

struct SubtractorOutput {

  SubtractorOutput();

  ~SubtractorOutput();

  std::array<float, kBlockSize> s_refined;

  std::array<float, kBlockSize> s_coarse;

  std::array<float, kBlockSize> e_refined;

  std::array<float, kBlockSize> e_coarse;

  FftData E_refined;

  std::array<float, kFftLengthBy2Plus1> E2_refined;

  std::array<float, kFftLengthBy2Plus1> E2_coarse;

  float s2_refined = 0.f;

  float s2_coarse = 0.f;

  float e2_refined = 0.f;

  float e2_coarse = 0.f;

  float y2 = 0.f;

  float s_refined_max_abs = 0.f;

  float s_coarse_max_abs = 0.f;

  // Reset the struct content.

  void Reset();

  // Updates the powers of the signals.

  void ComputeMetrics(rtc::ArrayView<const float> y);

};

}  // namespace webrtc

#endif  // MODULES_AUDIO_PROCESSING_AEC3_SUBTRACTOR_OUTPUT_H_